From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for ...
Giant ground-based reflector telescopes do much of astronomy's heavy lifting, although the U.S.'s largest in Hawaii is not ...
Parabolic reflectors are pretty handy devices ... suitable commercial dishes aren’t that hard to come by. But a big, shiny mirror for your solar death-ray needs is another matter, which is ...
The James Webb Telescope's gold mirrors aren’t just for looks—they’re a scientific marvel. Gold reflects up to 99% of ...
To me, this means a large parabolic reflector ... For a visible light telescope at a wavelength of 400 nanometers, this means a parabolic mirror needs to have a surface finish that is perfect ...